1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3a2d9754951626597c79bae89e02b145a7b54fd6073a1d67d9acdc40e7f6ff. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94d74c86-270c-4854-8b49-c52e7ee19ee8.json and https://artists.proofprofile.net/proofs/artist/94d74c86-270c-4854-8b49-c52e7ee19ee8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c6d8443e7d3232cda3fcc0d97383c638f7889229e918c5ac94628ec3dbbee7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7P32300593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd280b1a2c183338d3f29000f2b7710e501a86b88893c71ef04efa4a403267a97. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7P32300614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62189259aa3254db60a05a5cec23100bb9a33612a70460000404badf8dafba7d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7P32300655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4f3e4410508d2ec491678246f9d212c5fe11694bb085ddc0c4cdef3fb984bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7P32200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe394eca714ca633520be8989566ec0a9f0996a9d8bd55f4681f828cc2defc888. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX7P32200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d032111ee98e5dfdce0ccfe687496f413741c62f7a50939d9e0845fd3113222. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2401088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ba63b674f3cc88371bc8a635e1beb91b7fd34868ef212c6e3c5f08a04fffef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2401089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27714eeaa44ea6872a4f11deae118c709fd335c229250c769479738e1e17e4d1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2401090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb38da8ee584f9d994101671dbfef494474d0f0a8dffeae5fe8c6d4766b7edf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2401091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5604e1663d06977d3e893162d2a92c3f933da56aeb9cb1726d149c89aaac4284. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2401092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5352bcd66f1a2ed7deeeee1864870a19852fe090f507e4364577c818fde6a787. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2401094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3d2c73e9e4ded25c21e0462a466f630e95e0577082ce863538eb03bb4f1968. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2401097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299f9deef2198cc1b1b2bac02cb88499a70623349b618bbfd6ecd0625a5ef2bb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d7a20acbdca73acc15ff11028887619a7b150a3964ef0cc31ff3def4cd56b9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2401098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb835e683b2ac3133b04fc6ea1e4f1b2994d7e4630282c88e32997668fd4d46. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2400940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cf7b7f6d021def10d618a954237734f727b1052f22f02ac4c38745772e9c1c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2400943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77064663ad0102881869edbee62954f72b67c2238df26f9757a086c0c406b83. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2400945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda54963be331e2216d6f1c8fe0fb7d0af198ec22a99ff3aa2aa5160a49a32d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2400946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1071cc59ab54a99e93436d4c09dfeb4586e2c69584c75b23fd1f3ef7e81989a7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2400951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c956158a7e104da037aeb062513b1d15c366babe85fbd27e31b41adb52e89d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R1901356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6a0c58be0bd3ab4d249ce56f03108e19d9d7de135cae500ebfa6e1d85e4482. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2101096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72fb091ecda693809029a308b6767b31b937f7a83407734d99f3b680cc0c2ff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2400955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1071cc59ab54a99e93436d4c09dfeb4586e2c69584c75b23fd1f3ef7e81989a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2400951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb19584a82cc4f514876ba55951f8640510d1d499883f59b82efb597c9a94462. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BK4442300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f82bfe9bc01c97419a33d743bece8e553e33411c7c6fbf2540814c7f94da33. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2300682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe39af0040e0b0e6530f03584347f5f5a0006eb849859480f99da408b5a35b37. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXG6R2400779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd439465316e9322867658d5a0838db79e08d3c7af1a81f3855fdba664322240. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BK4442300006.